EP1958369B1

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Publication number: EP1958369B1
Application number: EP06838713.3A
Authority: EP
Inventors: Ted Tsei Kuo; Ming-Jye Sheu; Tian-Yuan Lin; Tyan-Shu Jou
Original assignee: Ruckus Wireless Inc
Current assignee: Ruckus Wireless Inc
Priority date: 2005-12-01
Filing date: 2006-12-01
Publication date: 2015-04-08
Anticipated expiration: 2026-12-01
Also published as: US9313798B2; CN101322346A; US8605697B2; US8009644B2; WO2007064822A2; EP2763443A1; EP1958369A2; US20070130456A1; WO2007064822A3; US8923265B2; EP1958369A4; US20150133089A1; EP2763443B1; US20110281609A1; US20140066112A1

Description

BACKGROUND

FIELD OF THE INVENTION

The present invention relates generally to wireless communications and more specifically to wireless base station virtualization.

DESCRIPTION OF THE RELATED ART

An access point is a transmitter/receiver device that communicates data with one or more remote receiving nodes over a wireless link. An access point may include a wireless base station (WBS) that provides series of wireless access devices (WADs)-such as an IEEE 802.11 or IEEE 802.16e Network Interface Card (NIC) or IEEE 802.16 Customer Premises Equipment (CPE)-access to a wireless network. The terms "WBS" and "access point" may be used interchangeably throughout the present disclosure. The wireless network may be, for example, an IEEE 802.11 or IEEE 802.16 network. Prior art access points broadcast beacon frames for receipt by WADs to indicate that a wireless service is available. Further, WADs configured to access a wireless network may broadcast service request frames to solicit services from wireless networks in the area. An example of a service request frame includes a probe request frame as described in the IEEE 802.11 wireless standard.
Prior art access points are generally limited to providing a small number of services. The number of provided services is limited, in part, by the combined length of the beacon frames generated by the access point. Each provided service is identified within a beacon frame by a Service Set Identifier (SSID). As more services are provided by an access point, the signal comprising the beacon frames becomes longer. Due, in part, to time limitations and resource constraints at both the access points and WADs, a typical WBS can only advertise, and thus provide, up to eight to sixteen services. The time limitations are due to required gaps between the beacon frames for each of the services. Resource constraints may include consumption of available bandwidth and use of available processing power at the access point. Prior art access points are further limited to providing a fixed and static set of services regardless of geographic location or service usage within the wireless network.
FIGURE 1 depicts a controller and access points in awireless network100 as may be found in the prior art and exemplifies the problems of static service offerings. Thenetwork100 includes acontroller105 and a series ofaccess points110A-110N. Thecontroller 105 defines a fixed set of SSIDs associated with each ofaccess points110A-110N.
Access points110A-110C may be associated (via controller 105) with the same set of SSIDs (e.g., airespider, aspd, ruckus, v54, linksys, tsunami, 2wire, xlan, wireless, compaq). Theaccess point110D may be associated (also via controller 105) with a subset of the SSIDs associated withaccess points110A-110C. For example, theaccess points110A-110C inFIGURE 1 are associated with SSIDs for ruckus, v54, linksys, tsunami, 2wire, xlan, wireless, and compaq butaccess point110D may only be associated with SSIDs for ruckus and v54. Theaccess point110D cannot be further associated with additional SSIDs beyond those defined by thecontroller105. As a result, theaccess point110D may not be associated with SSIDs for linksys, tsunami, 2wire, xlan, wireless, and compaq even though the access point may not be operating at full capacity thus wasting available resources, especially if theaccess points110A-110C are overloaded by service requests from WADs.
One solution to the problem of static and limited service offerings has been the use of unlicensed band radio frequencies (RF). This solution, however, risks RF interference from other devices at the deployed environment. The RF interference problem may severely affect service quality at premises where multiple service providers deploy their wireless service networks.
Another solution may be to offer negotiated provider-to-provider channel allocation. Such negotiation may allow for a variety of services but may actually contribute to increased RF interference. Such negotiation may also prove to be tedious and time-consuming amongst providers.
An alternative to the use of unlicensed band RF and negotiated channel allocation is the deployment of a single service provider as is common in, for example, airports and coffee house 'hot spots.' The single provider (e.g., T-Mobile) in such a scenario will generally have exclusive deployment rights to the premises thereby forcing the user of a WAD to subscribe to that provider's service. Such hot spots may be able to provide additional services by mandating a wireless network infrastructure, backhauling the wireless traffic, and differentiating the traffic based on the service provider at the backend. Many locations may not want to establish or maintain the wireless infrastructure, however, due to cost or other limitations.
Furthermore, virtual access points are known in the art. For example,US 2004/0214572 A1 describes a system and a method for providing access to multiple wireless service providers on a shared network infrastructure. Access points of the network infrastructure may include a plurality of virtual access points, each virtual access point corresponding to a wireless service provider. A portable computing device of a user stores identification information indicating a wireless service provider of the plurality of possible wireless service providers, and which may include an access level of the user. Each access point listens for or detects identification information associated with numerous wireless service providers. When the access point receives the identification information from the portable computing device, it determines the virtual access point for the portable computing device using the identification information. Network access is then provided to the portable computing device through the determined wireless service provider at the determined access level.
Further,US 2005/0261970 A1 relates to a system and a method for installing and/or providing a network infrastructure in various entity locations to offer network services to support customers of one or more carrier entities. In particular, a wireless access point in this document may be operable to appear as any one of a plurality of different carrier entities, meaning that a single wireless access point may "pretend to be" or behave as a wireless access point dedicated to a particular carrier entity for each of a plurality of different carrier entities. In various embodiments, the wireless access point provides a plurality of virtual wireless access points, where a virtual wireless access point may include wireless access point functionality that appears as a physical access point to a portable computing device.
The scientific paper "Virtual Access Points" by Bernard Aboba also relates to virtual access points. In particular, the benefit of virtual access points is described and the mechanisms used to implement this capability are discussed.
US 2003/0156558 A1 describes a remote mobile unit including a radio device with an ability to communicate through a LAN by remote association with an access point that is out of range for communication with the radio device of the remote mobile unit. The remote mobile unit transmits a quest frame that is received and retransmitted by one or more intermediate mobile units until a connection is made with the access point. Each of the intermediate mobile units adds an identifying address to the request, forming a path that is used in both directions to transmit a response from the access point to the remote mobile unit and to transmit data between the access point and the mobile unit.

SUMMARY

The invention is defined in claims 1, 8, 15 and 22, respectively. Particular embodiments are set out in the dependent claims.

BRIEF DESCRIPTION OF THE DRAWINGS

FIGURE 1 depicts a controller and access points in a wireless network as may be found in the prior art;
FIGURE 2 depicts an exemplary wireless communication network offering on-demand service through access point virtualization according to an embodiment of the present invention;
FIGURE 3 depicts an exemplary method for providing on-demand service through access point virtualization according to an embodiment of the present invention;
FIGURE 4 depicts an exemplary method for roaming amongst wireless base stations in an embodiment of the present invention; and
FIGURE 5 depicts an exemplary method for providing on-demand wireless access methods through access point virtualization according to an embodiment of the present invention.

DETAILED DESCRIPTION

A system, method, apparatus, and computer-readable medium for initiating a virtual presence at a physical access point in response to a request for a service from a WAD is provided. As a result, a particular wireless service may be provided to a subscriber on an on-demand basis according to location and/or type of service requested notwithstanding the aforementioned limitations of the prior art. The service may then be terminated when demand for the service comes to an end. As a result, a common wireless service infrastructure may be shared amongst service providers thereby eliminating the need for radio channel coordination and otherwise enhancing service quality for those service providers at the common wireless premises site.
To overcome the limitations on the number of services that may be provided by a physical access point due to, for example, the length of beacon frames, a virtual presence is initiated by the physical access point in an on-demand fashion. Additional virtual access point presences may be dynamically mapped depending on received service requests from a WAD. Because only the services that have been requested are provided, the access point is able to provide a greater selection of services. Further, the access point presence need only broadcast the beacon frames corresponding to the initiated virtual access points thereby reducing interference between the services and preserving network bandwidth. The method may also be implemented with respect to wireless access methods such as security policies or authentication schemes.
By dynamically binding services with a virtual presence in a WBS upon the request of subscribers who demand the services, a WBS may provideN services out ofM services. In this equation,N is the maximum active instances in a WBS at any given time andM is the total number of services a provider offers (M ≥N ≥ 1). Thus, at any given time, there may be differentN subset ofM services offered to subscribers by different WBS.
FIGURE 2 depicts an exemplarywireless communication network 200 offering on-demand service through access point virtualization according to an embodiment of the present invention. Thenetwork200 comprises an access point (WBS)205 and one or more WADs such aswireless clients210, 215, and220. The wireless clients210-220 may communicate with theaccess point205 via any variety of wireless networks such as an IEEE 802.11 network and/or an IEEE 802.16 network.
Theaccess point205 is capable of advertising services and allowing subscribers to access a wireless network according to a service policy. Theaccess point205 may initiate one or more virtual presences in accordance with an embodiment of the invention like the methods described in the context ofFIGURES 3 and5. Theaccess point205 inFIGURE 2 is configured to access a service list indicating a plurality of services, which may be referred to as valid services in that the access point250 may offer those services to a requesting subscriber. The valid services may include various wireless services provided by service providers such as T-Mobile, Verizon Wireless, Sprint, AT&T, and the like. The functionality of theaccess point205 may be distributed over one or more other physical devices such asaccess point205a.
Theexemplary access point205 may include hardware such as a modulator/demodulator (modem), antenna, processor, and memory. The modem may be configured to receive data from a router connected to the Internet and convert the data into a modulated RF signal including an 802.11 compliant modulated RF signal. The antenna may communicate the modulated RF signal wirelessly to one or more WADs within a range associated with theaccess point 205. The antenna may further be configured to receive RF-modulated data from a WAD. The antenna may be responsible for transmission and receipt of beacon frames and service requests, respectively. The processor may be configured to access and process instructions and/or data stored in a memory such as a list of valid services as described above. Instructions in memory may be configured to initiate a virtual presence at the WBS and undertake authentication operations. Quality of service (QoS), security, and roaming instruction sets may also be stored in memory and accessible and executable by the processor.
Clients210, 215, and220 (as noted earlier) are exemplary of any variety of WADs such as an IEEE 802.11 or IEEE 802.16e NIC, and IEEE 802.16 CPE. Client WADs210-220 may be embodied in other equipment such as a laptop computer, smart phone, and the like. Client WADs210-220 ofFIGURE 2 broadcast service requests with a desired SSID or other identifier regardless of whether a local WBS, such asaccess point205, actually advertises the availability of the desired service. The service requests may be broadcast according to a relevant wireless network standard such that embodiments of the present invention need not change user behavior.
As will be detailed inFIGURE 3, upon receipt of a service request from, for example,WAD client210, theaccess point205 will determine whether the requested service is a valid service(e.g., is the requested service provided by the access point205). If so, theaccess point205 will begin broadcasting a plurality of beacon frames indicating the availability of that service to attend to that request. TheWAD client210 may then negotiate with the access point205 (e.g., authentication) such that the WAD may access the desired service at anaccess point205 via a virtual presence, as discussed herein.
FIGURE 3 depicts anexemplary method300 for providing on-demand service through access point virtualization according to an embodiment of the present invention. Themethod300 may be performed byaccess point205 and/oraccess point205a. In other embodiments, themethod300 may be performed to provide on-demand wireless access methods in, for example, an enterprise environment. The wireless access methods may include subscriber authentication, authorization, data confidentiality, and QoS treatments. Themethod 300 further provides for terminating a virtual presence at a WBS in the event that no subscribers are presently within the range of the WBS and requesting a particular service associated with the virtual presence.
Instep305, a WBS (such as access point205) is initialized. Initialization may include entering a RUN state, which may further include the WBS broadcasting beacon frames indicating a network identifier. The network identifier may include an ID associated with the physical wireless network provider, which may be an entity that operates the WBS device. In some embodiments, the WBS may not broadcast the beacon frames indicating a network identifier for the purpose of network security. The network provider may be associated with a particular service provider. As noted in the context ofFIGURE 2, the WBS functionality may be distributed amongst a group of access points(e.g.,access points205 and205a) to allow for, for example, redundancy and scalability.
Instep310, the WBS may optionally broadcast one or more beacon frames associated with one or more services. For example, a WBS may broadcast a beacon frame based on a default setting, a service that is frequently accessed via the WBS, or a service associated with an initiated virtual WBS presence on the WBS (access point 205).
Instep315, a service request is received at the WBS from a WAD. Regardless of whether the WBS proactively advertises the availability of a particular service, the WAD will broadcast a service request that may be received by the WBS. The service request indicates a desired service identifier, which may, in turn, indicate a particular service provider. Referring toFIGURE 2,WAD client210 may, for example, broadcast a service identifier for T-Mobile wireless service whileWAD client215 may indicate a unique service identifier indicating the desire for wireless service from Verizon Wireless. The WBS (access point205) may receive the broadcast service requests of bothWAD client210 andWAD client215.
Instep320, the WBS determines whether the service request is valid. The WBS may access a service list stored in memory or at a local or remotely accessible database indicating a one or more service identifiers associated with valid services. If the service request is not valid, themethod300 ends without a virtual presence being established at the WBS.
If, however, the service request is valid, the WBS determines whether there is an already existing virtual WBS presence corresponding to the service identifier instep325. Referring again toFIGURE 2, identification of an existing virtual WBS presence may occur if, for example, the Verizon Wireless service request is received fromWAD client210 butWAD client220 is already connected to a virtual WBS presence via Verizon Wireless. If, however, the service request is received fromWAD client215, which requested T-Mobile service, there may not be an existing virtual WBS presence because no other client has initiated the T-Mobile service through a virtual presence at the WBS.
If there is not an already existing WBS virtual presence, a virtual presence may be initiated by the physical WBS instep330. The WBS may be capable of providing up to eight to sixteen virtual WBS presences simultaneously although, in some embodiments, the WBS may actually offer valid services in excess of that number. If the WBS is presently offering the maximum number of virtual presences, the WBS may not be able to initiate additional virtual WBS presences. Another nearby WBS may, however, take on the task of initiating and actively providing the additional virtual presence.
When a single WBS has reached a physical limit with respect to offering a virtual presence for a particular service, the WBS may not respond to service requests that do not correspond to an already active virtual presence. The virtual WBS presence may be initiated by the WBS generating or retrieving an SSID associated with the service provider. The WBS may then broadcast a beacon frame associated with the SSID indicating the availability of that service through a virtual WBS presence. Subsequent WADs may access this service via the virtual presence subject to, for example, authentication or other service policies.
If there is an existing virtual WBS presence or the virtual WBS presence has been initiated, the WAD engages in an authentication process according to an authentication policy of the service provider instep335. The authentication policy may include credentials and privileges associated with the virtual WBS presence.
Instep340, a determination is made as to whether the WAD is authenticated. A WAD may, in some instances, fail an authentication process with the service provider due to, for example, lack of credentials. In some embodiments, to avoid a denial of service (DoS) attack, the virtual WBS presence may be terminated if there is no authenticated WAD within a set period of time after the virtual WBS presence is initiated. This period of time may be a default period or may be configurable by a network or service administrator. If the WAD is not authenticated or the set period of time has expired, themethod 300 ends. If the WAD is authenticated, the virtual WBS provides a wireless connection to the WAD and begins servicing the WAD instep345.
Instep350, while the virtual WBS is present, a determination is made as to whether any subscribing WADs are remaining within range of the WBS. If subscribers are remaining, the virtual WBS presence and service is maintained. If there are no subscribers remaining, the virtual WBS presence may be terminated instep355. In some embodiments, the virtual WBS presence may be terminated after a period of time has passed if the last subscribing WAD leaves the range of the WBS.
After the virtual WBS presence is terminated, the WBS is able to initiate a new virtual WBS presence. By dynamically assigning SSIDs to the WBS, the WBS can provide services to WADs on-demand. Additionally, by only providing services that are requested, themethod300 reduces the effects of RF interference between devices and WBSs in a wireless network. Bandwidth and processing power that might otherwise be expended on unnecessarily broadcast beacon frames is also preserved.
FIGURE 4 depicts anexemplary method400 for roaming amongst WBSs in an embodiment of the present invention. The present invention may allow for roaming of a WAD from one WBS service area to another during a service session. Roaming is inclusive of using a particular WAD outside of a pre-defined 'home' area that may be associated with a particular WBS as well as the general movement of a WAD amongst the service areas provided by a multiplicity of WBSs.
Instep410, a determination is made as to whether there is an existing virtual WBS presence in the service area to where a WAD is preparing to roam. Identification of an existing virtual WBS presence may occur through the WBS broadcasting beacon frames that identify the wireless network provider. The broadcast identity may be a physical network provider or individual service providers. Identification of an existing virtual WBS presence may also occur through the roaming WAD broadcasting a service request for a particular service and a particular WBS broadcasting beacon frames in response to that request.
A determination that a WAD is preparing to roam from the virtual presence of a present WBS (thereby necessitating the determination of step410) may be indicated by degradation in signal quality between the WAD and the virtual presence of the WBS. At some threshold, which may be configurable, the WAD or WBS may attempt to identify a better WBS virtual presence to associate with the WAD. A threshold indicative of roaming may also be associated with a number of failed retransmission attempts that may be a result of degraded signal quality. In some embodiments, identification of the new WBS virtual presence may include a determination of the 'best available' WBS rather than 'an available' WBS to help ensure the highest quality wireless service session. Both the WAD and the WBS may indicate the need for roaming.
If there is no pre-existing virtual WBS presence identified instep410, a new virtual WBS presence may be initiated atstep420 as described, for example, in the context ofFIGURE 3. Like the method described in the context ofFIGURE 3, if a new virtual presence cannot be initiated (e.g., a service request is not valid), then themethod400 ends and the wireless service may be temporarily interrupted or terminated all together. In some embodiments, the WAD may begin searching for a new WBS to offer the previously accessed service (e.g., the WAD may continue to or attempt to roam).
A WAD that has roamed into the service area of a new WBS and initiated a new virtual presence (step420) may need to be authenticated atstep430. Authentication (like that described in the context ofFIGURE 3) at the new WBS may be required to maintain network security. In the case of roaming versus a first initiation of a virtual presence at a WBS, the level of authentication may be reduced(e.g., with respect to wireless switching/controller mechanisms). Reduced authentication may occur through certain authentication information being provided to a new WBS by a previous WBS. Certain authentication information may also be provided through, for example, an authentication token possessed by the WAD following authorization with a first WBS.
Following authentication, the prior WBS 'hands over' the WAD to the new WBS. The WAD is then serviced by the virtual presence of the new WBS instep440 in a fashion similar to that ofFIGURE 3. The hand over procedure of the WAD between WBS may accord with those defined in, for example, the IEEE 802.11r and IEEE 802.16e-2005 standards.
In step450-after the service has been offered to one or more WAD subscribers- a determination is made as to whether there are any WAD subscribers remaining at the virtual presence. This determination may be a configurable period of time, for example, with respect to a last service request for a particular service or initiation of a particular virtual presence. If no WAD subscribers (both the initial and/or subsequent subscribers) are present at or after that expiration of time (e.g., 10 minutes since a service request for a particular service or 20 minutes after the presence was initiated), the WBS resources dedicated to maintaining the associated virtual presence may be freed and that particular presence terminated atstep460. If WAD subscribers remain (as may be determined in accordance with the aforementioned period of time), then the virtual presence is maintained atstep470 and the determination is later repeated atstep450.
Returning to the start of the present method (400), in some instance a particular virtual presence may already exist at a WBS as determined instep410. In such an instance, an optional determination of available resources may be made with respect to the WBS offering the virtual presence atstep480. For example, a particular service may be offered by the WBS but that WBS may also be hosting several other WADs. While the service may be available, the WBS may have difficulty in accepting a new roaming subscriber WAD and/or maintaining a certain level of service for already existing WADs for that particular service or any other service as may be offered by through a virtual presence at the WBS.
If the resources are available and the WBS may admit and manage the new WAD, then authentication and service may take place insteps430 and440, respectively. If the WBS is unable to admit and/or manage the WAD as may be governed by a particular QoS or admission control policy, the new subscriber may be denied and the wireless service may be temporarily interrupted or terminated all together. In some embodiments, the WAD may begin searching for a new WBS to offer the previously accessed service(e.g., the WAD may continue to or attempt to roam).
FIGURE 5 illustrates anexemplary method500 for providing on-demand wireless services based on subscriber credentials in accordance with an exemplary embodiment of the present invention. As noted above, in some embodiments of the present invention, the WBS may advertise wireless access methods instead of wireless services. The wireless access method broadcast by a WBS may indicate mechanisms for subscriber authentication, authorization, data confidentiality, and QoS treatments over the air interface. In such an embodiment, a service may be offered based on subscriber credentials instead of virtual presence at a WBS associated with a WAD subscriber. The dynamic nature of the WBS virtual presence is used to specify access policies for WAD subscribers whereby once a subscriber is connected to a wireless network infrastructure, the type of services made available to the subscriber are based on the aforementioned subscriber credentials.
Instep510, an access point such as a WBS is initialized and begins broadcasting a default wireless link access method. Instep520, a subscriber WAD may broadcast a request with respect to a preferred wireless access method. The WBS-upon receipt of the WAD request-determines whether the method identified by the WAD is a valid method instep530. This determination may be similar as to the determination methodology as described in the context of, for example,FIGURE 3. Instep 540, presuming the requested access method is valid, the WBS may begin broadcasting beacon frames indicative of the availability of the requested access method. The WBS may also initiate a virtual presence at the WBS instep550 that corresponds to the aforementioned access method.
Instep560, an authentication procedure may take place with respect to the requesting WAD in a fashion similar to that described in the context of, for example,FIGURES 3 and4. Instep570, once the WAD subscriber has been authenticated and admitted to the network, the WAD is grouped based on its credentials. This credential grouping will determine what wireless services the WAD may access and utilize instep 580 regardless of the access method used by the WAD to enter the network.
As was discussed in the context of, for example,FIGURES 3 and4, subsequent WADs may be admitted to an already initiated virtual presence at a particular WBS albeit based on a particular access method in the context ofFIGURE 5 rather than a requested service as was the case inFIGURE 3 and4. Various determinations may also be made with respect to termination of a particular access methodology after a last subscriber has ended their connection with the WBS. As was the case in the context ofFIGURES 3 and4, the period of time that must elapse before terminations takes place may be adjustable and based on a variety of trigger points. The present methodology further supports roaming of WADs as was discussed in the context ofFIGURE 4 as well as unavailable method handling and DoS attack prevention.
The above description is illustrative and not restrictive. Many variations of the invention will become apparent to those of skill in the art upon review of this disclosure. Therefore, specific details disclosed herein are not to be interpreted as limiting but rather as an exemplary basis for the claims and as a representative basis for teaching one skilled in the art to employ the present invention in virtually any appropriately detailed system, structure, method, process, or manner.
In that regard, the system identified inFIGURE 2 is exemplary and may include various alternatives, equivalents, or derivations thereof. Similarly, the steps identified inFIGURES 3,4, and5 (and the order thereof) are exemplary and may include various alternatives, equivalents, or derivations thereof including but not limited to the order of execution of the same. The steps of the aforementioned methods (and their various alternatives) may be embodied in hardware or software including a computer-readable medium (e.g., computer memory, optical disc, memory card, carrier waves, etc.) including programs and/or instructions executable by, for example, the processor of a computing device.

Claims

A method for providing on-demand wireless services, the method being performed by a wireless base station and comprising:
receiving (315) a service request from a wireless access device (210-220);
initiating (330) a virtual wireless base station presence in an on-demand fashion and in response to the service request, the virtual wireless base station presence initiated at the wireless base station (205) configured to provide the requested service, wherein the requested service is a subset of a total number of services available;
broadcasting (310) a plurality of beacon frames from the wireless base station (205), wherein the plurality of beacon frames indicate the availability of the requested service via the virtual wireless base station presence and are broadcast in response to the service request from the wireless access device (210-220);
providing the requested service to the wireless access device (210-220) via the virtual wireless base station presence; and
terminating (355) the virtual wireless base station presence in response to a determination that no subscribing wireless access device (210-220) is within a range of the wireless base station (205) for a predetermined period of time.
The method of claim 1, further comprising authenticating (335) a service subscriber credential associated with the wireless access device (210-220).
The method of claim 2, further comprising terminating the virtual wireless base station presence if the service subscriber credential has not been authenticated within a set period of time.
The method of claim 1, further comprising:
receiving a service request from a second wireless access device; and
providing the requested service to the second wireless access device using the virtual wireless base station presence.
The method of claim 1, further comprising:
determining that the wireless access device (210-220) is preparing to roam from the virtual wireless base station presence as indicated by degradation in signal quality between the wireless access device (210-220) and the virtual wireless base station presence; and
initiating (420) a second virtual wireless base station presence at a second wireless base station (205a).
The method of claim 1, further comprising determining whether to initiate the virtual wireless base station presence based on whether another virtual wireless base station presence is initiated at the wireless base station and providing a requested service.
The method of claim 1, further comprising determining whether the requested service is associated with a wireless service indicated on an available service list.
A system for providing on-demand wireless services comprising:
an 802.11 wireless network (200);
at least one wireless access device (210-220) configured to broadcast a service request; and
a wireless base station (205) configured to:
receive (315) the service request;
initiate (330) a virtual wireless base station presence in an on-demand fashion and in response to the service request;
broadcast (310) a plurality of beacon frames indicating availability of the requested service via the virtual wireless base station presence, wherein the requested service is a subset of a total number of services available, the plurality of beacon frames broadcast in response to the service request from the wireless access device (210-220);
provide the requested service to the wireless access device (210-220) via the virtual wireless base station presence; and
terminate (355) the virtual wireless base station presence if no subscribing wireless access device (210-220) is within a range of the wireless base station (205) for a predetermined period of time.
The system of claim 8, wherein the wireless base station (205) is further configured to authenticate (335) a service subscriber credential associated with the wireless access device (210-220).
The system of claim 9, wherein the wireless base station (205) is further configured to terminate the virtual wireless base station presence if the service subscriber credential has not been authenticated within a set period of time.
The system of claim 8, wherein the wireless base station (205) is further configured to receive a service request from another wireless access device and provide the requested service to the other wireless access device via the virtual wireless base station presence.
The system of claim 8, wherein the wireless base station (205) is further configured to:
determine that the wireless access device (210-220) is preparing to roam from the virtual wireless base station presence as indicated by degradation in signal quality between the wireless access device (210-220) and the virtual wireless base station presence; and
initiate (420) a second virtual wireless base station presence at a second wireless base station (205a).
The system of claim 8, wherein the wireless base station (205) is further configured to determine whether to initiate the virtual wireless base station presence based on whether another virtual wireless base station presence is initiated at the wireless base station and providing the requested service.
The system of claim 8, wherein the wireless base station (205) is further configured to determine whether the requested service is indicated on a service list.
A wireless base station comprising:
memory comprising a first set of instructions;
a processor configured to execute the first set of instructions, wherein the execution of the first set of instructions initiates a virtual wireless base station presence in an on-demand fashion and in response to a service request, wherein the requested service is a subset of a total number of services available;
an antenna configured to receive (315) the service request from a wireless access device (210-220), the antenna further configured to broadcast (310) a plurality of beacon frames indicating the availability of the requested service via the virtual wireless base station presence, the plurality of beacon frames broadcast in response to the service request from the wireless access device (210-220); and
a modem coupled to the antenna, the modem configured to provide the requested service via the virtual wireless base station presence;
wherein the processor is further configured to terminate the virtual wireless base station presence in response to a determination that no subscribing wireless access device (210-220) is within a range of the wireless base station (205) for a predetermined period of time.
The wireless base station of claim 15, wherein the processor is further configured to authenticate (335) a service subscriber credential associated with the wireless access device (210-220).
The wireless base station of claim 16, wherein the memory further comprises a second set of instructions executable by the processor, wherein the execution of the second set of instructions terminates the virtual wireless base station presence if the service subscriber credential has not been authenticated within a set period of time.
The wireless base station of claim 15, wherein the antenna is further configured to receive a service request from another wireless access device and the modem is further configured to provide the requested service to the other wireless access device via the virtual wireless base station presence.
The wireless base station of claim 15, wherein the memory further comprises a second set of instructions executable by the processor, wherein the execution of the second set of instructions:
determines that the wireless access device is preparing to roam from the virtual wireless base station presence as indicated by degradation in signal quality between the wireless access device and the virtual wireless base station presence; and
initiates (420) a second virtual wireless base station presence at a second wireless base station (205a).
The wireless base station of claim 15, wherein the memory further comprises a second set of instructions executable by the processor, the execution of the second set of instructions determining whether to initiate the virtual wireless base station presence based on whether another virtual wireless base station presence is initiated at the wireless base station and providing the requested service.
The wireless base station of claim 15, wherein the memory further comprises a second set of instructions executable by the processor, the execution of the second set of instructions determining whether the requested service is indicated on a service list.
A computer readable storage medium having embodied thereon instructions for providing on-demand wireless services when executed by a processor, the instructions adapted to perform the steps of the method of any of claims 1 to 7.